– why do European trucks have multiple speed limit signs on the back of the trailer? For instance 70, 90, 100. How exactly does anyone checking it know which limit is applicable to what situation?

Question

– why do European trucks have multiple speed limit signs on the back of the trailer? For instance 70, 90, 100. How exactly does anyone checking it know which limit is applicable to what situation?

In: 2721

Answer 1

I always feel that a big part of those signs is to stop people getting mad at the driver. If you’re on a road that most people can go 60mph on but the truck is only going 50 you might get annoyed but if you know they legally can’t go faster then you don’t blame the driver.

As to why they have multiple: in the UK we have a fantastic system where some roads have set speeds: 20,40,50mph, and some roads are “national speed limit” which means 60 or 70 depending on the road, if it’s a single lane then it’s a 60 and a dual carriageway and larger are 70. The trucks are often limited legally on these roads to 50, 60 respectively. They also often show 64 which is 100kph as a limit – the truck has a device fitted making it impossible to go any faster than this.